RFR: 8316187: Modernize an example in StringTokenizer

[Naoto Sato]

On Wed, 13 Sep 2023 12:39:00 GMT, Pavel Rappo <prappo at openjdk.org> wrote:

> This modernizes an example to use the extended for-statement introduced in JDK 1.5.
> 
> I understand that StringTokenizer is a legacy class. But legacy or not, a class shouldn't promote older constructs when newer fit better. Especially when advising on preferred alternatives to itself.
> 
> That said, I wouldn't go as far as to use `var` anywhere in that example: JDK 10, which introduced `var`, might still be relatively new to some. Nor would I inline the call to `String.split` in the for-statement to dispense with the `String[] result` variable: I reckon it's good for a reader unfamiliar with `String.split` to see the type it returns.
> 
> Perhaps one additional thing to ponder is this: we could either add `@see` to point to `String.split` or make the whole example a `@snippet`, which `@link`s code to the definition of `String.split`.

Marked as reviewed by naoto (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/15716#pullrequestreview-1625561688